public static ILayer getLayerArg(Varargs args, int index) throws ScriptException {
if (args.isuserdata(index)) {
ILayer layer = args.touserdata(index, ILayer.class);
if (layer != null) {
return layer;
}
} else if (args.isnil(index)) {
return null;
}
throw new ScriptException("Invalid layer arg: " + args.tojstring(1));
}
